Answer 1

You can use search here in QA or in code section.

https://www.sololearn.com/Discuss/628923/?ref=app

https://www.sololearn.com/Discuss/1733422/?ref=app

Answer 2

If you are talking about in python it won't work here... if you are talking about with Javascript then you are in luck. Please use the searchbar. There are many many threads about audio tech works.
You don't necessarily have to look for a audio url to create a sound though it is easier... Also check out the various audio codes others have created.
Thanks
https://www.sololearn.com/discuss/2084188/?ref=app
https://www.sololearn.com/discuss/1545875/?ref=app
https://www.sololearn.com/discuss/1733422/?ref=app
https://www.sololearn.com/discuss/1603437/?ref=app
https://www.sololearn.com/discuss/1576957/?ref=app
https://www.sololearn.com/discuss/1060599/?ref=app
https://www.sololearn.com/discuss/1822403/?ref=app
https://www.sololearn.com/discuss/1100349/?ref=app
https://www.sololearn.com/discuss/1603175/?ref=app
https://www.sololearn.com/discuss/1315643/?ref=app